Last change
on this file since 557 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.2 KB
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Rev | Line | |
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[444] | 1 | /* cmb-outbyte.c -- outbyte function for CMB1200 eval board. |
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| 2 | * |
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| 3 | * Copyright (c) 1999 Cygnus Support |
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| 4 | * |
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| 5 | * The authors hereby grant permission to use, copy, modify, distribute, |
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| 6 | * and license this software and its documentation for any purpose, provided |
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| 7 | * that existing copyright notices are retained in all copies and that this |
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| 8 | * notice is included verbatim in any distributions. No written agreement, |
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| 9 | * license, or royalty fee is required for any of the authorized uses. |
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| 10 | * Modifications to this software may be copyrighted by their authors |
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| 11 | * and need not follow the licensing terms described here, provided that |
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| 12 | * the new terms are clearly indicated on the first page of each file where |
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| 13 | * they apply. |
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| 14 | */ |
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| 15 | #include <_ansi.h> |
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| 16 | |
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| 17 | #define _TX 0x40 |
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| 18 | #define _SR 0x86 |
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| 19 | |
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| 20 | #define UART0_BASE 0x10009000 |
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| 21 | #define UART1_BASE 0x1000a000 |
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| 22 | |
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| 23 | #define UART_BASE UART0_BASE |
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| 24 | |
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| 25 | #define TXREG ((volatile unsigned short *)(UART_BASE + _TX)) |
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| 26 | #define SRREG ((volatile unsigned short *)(UART_BASE + _SR)) |
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| 27 | |
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| 28 | #define TRDY 0x2000 |
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| 29 | |
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| 30 | #define GDB_QUOTE_CHAR 15 /* ^O */ |
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| 31 | |
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| 32 | /* |
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| 33 | * outbyte -- send a byte to the UART. |
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| 34 | */ |
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| 35 | void |
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| 36 | outbyte (char ch) |
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| 37 | { |
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| 38 | while (!(*SRREG & TRDY)) |
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| 39 | ; |
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| 40 | *TXREG = GDB_QUOTE_CHAR; |
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| 41 | |
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| 42 | while (!(*SRREG & TRDY)) |
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| 43 | ; |
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| 44 | *TXREG = (unsigned short)ch; |
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| 45 | } |
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